| 摘要 |
EXTERIOR INSULATING SHEATHING An exterior insulating sheathing which comprises a foam polystyrene ply and a second ply glued to said polystyrene ply throughout. The second ply is preferably a fiberboard but may also be a waferboard. The sheathing is nailable, has a racking load of about 1900 to 3700 lbs, and has at least the exposed side of the second ply water resistant. This sheathing has a minimum tensile strength of 65 ? 14 kPa, a linear expansion at 97% RH and 23.degree.C, of less than 0.40% ? .02, a water vapour transmission of at least 96ng.Pa.s.m2, and a modulus of rupture of 0.5 to 17.2 megaPascal.
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